<template>
  <div :class="className" :style="{height:height,width:width}"/>
</template>

<script>
import echarts from 'echarts'
require('echarts/theme/macarons') // echarts theme
import { debounce } from '@/utils'

export default {
  props: {
    className: {
      type: String,
      default: 'chart'
    },
    width: {
      type: String,
      default: '100%'
    },
    height: {
      type: String,
      default: '350px'
    },
    autoResize: {
      type: Boolean,
      default: true
    },
    chartData: {
      type: Object,
      required: true
    }
  },
  data() {
    return {
      data: [],
      chart: null
    }
  },
  watch: {
    chartData: {
      deep: true,
      handler(val) {
        this.setOptions(val)
      }
    }
  },
  created() {
    var day = this.getYearAndMonthAndDay()
    this.data = day
    console.log(day)
  },
  mounted() {
    this.initChart()
    if (this.autoResize) {
      this.__resizeHandler = debounce(() => {
        if (this.chart) {
          this.chart.resize()
        }
      }, 100)
      window.addEventListener('resize', this.__resizeHandler)
    }

    // 监听侧边栏的变化
    const sidebarElm = document.getElementsByClassName('sidebar-container')[0]
    sidebarElm.addEventListener('transitionend', this.sidebarResizeHandler)
  },
  beforeDestroy() {
    if (!this.chart) {
      return
    }
    if (this.autoResize) {
      window.removeEventListener('resize', this.__resizeHandler)
    }

    const sidebarElm = document.getElementsByClassName('sidebar-container')[0]
    sidebarElm.removeEventListener('transitionend', this.sidebarResizeHandler)

    this.chart.dispose()
    this.chart = null
  },
  methods: {
    sidebarResizeHandler(e) {
      if (e.propertyName === 'width') {
        this.__resizeHandler()
      }
    },
    setOptions({ waterData, electricityData, fireData, gasData } = {}) {
      this.chart.setOption({
        xAxis: {
          data: this.data,
          boundaryGap: false,
          axisTick: {
            show: false
          }
        },
        grid: {
          left: 10,
          right: 10,
          bottom: 20,
          top: 30,
          containLabel: true
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross'
          },
          padding: [5, 10]
        },
        yAxis: {
          axisTick: {
            show: false
          }
        },
        legend: {
          data: ['水务告警', '电力告警', '火灾告警', '煤气告警']
        },
        series: [{
          name: '水务告警', itemStyle: {
            normal: {
              color: '#3888fa',
              lineStyle: {
                color: '#3888fa',
                width: 2
              }
            }
          },
          smooth: true,
          type: 'line',
          data: waterData,
          animationDuration: 2800,
          animationEasing: 'cubicInOut'
        },
        {
          name: '电力告警',
          smooth: true,
          type: 'line',
          itemStyle: {
            normal: {
              color: '#ffff33',
              lineStyle: {
                color: '#ffff33',
                width: 2
              }
              /* areaStyle: {
                color: '#f3f8ff'
              }*/
            }
          },
          data: electricityData,
          animationDuration: 2800,
          animationEasing: 'quadraticOut'
        },
        {
          name: '火灾告警',
          smooth: true,
          type: 'line',
          itemStyle: {
            normal: {
              color: '#ff3300',
              lineStyle: {
                color: '#ff3300',
                width: 2
              }
              /* areaStyle: {
                  color: '#f3f8ff'
                }*/
            }
          },
          data: fireData,
          animationDuration: 2800,
          animationEasing: 'quadraticOut'
        },
        {
          name: '煤气告警',
          smooth: true,
          type: 'line',
          itemStyle: {
            normal: {
              color: '#66cc00',
              lineStyle: {
                color: '#66cc00',
                width: 2
              }
              /* areaStyle: {
                  color: '#f3f8ff'
                }*/
            }
          },
          data: gasData,
          animationDuration: 2800,
          animationEasing: 'quadraticOut'
        }
        ]
      })
    },
    setOptions2({ waterData } = {}) {
      this.chart.setOption({
        xAxis: {
          data: this.data,
          boundaryGap: false,
          axisTick: {
            show: false
          }
        },
        grid: {
          left: 10,
          right: 10,
          bottom: 20,
          top: 30,
          containLabel: true
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross'
          },
          padding: [5, 10]
        },
        yAxis: {
          axisTick: {
            show: false
          }
        },
        legend: {
          data: ['所有告警']
        },
        series: [{
          name: '所有告警', itemStyle: {
            normal: {
              color: '#ff0000',
              lineStyle: {
                color: '#ff0000',
                width: 2
              }
            }
          },
          smooth: true,
          type: 'line',
          data: waterData,
          animationDuration: 2800,
          animationEasing: 'cubicInOut'
        }]
      })
    },
    initChart() {
      this.chart = echarts.init(this.$el, 'macarons')
      if (this.$store.getters.roles[0] === 'supervisor') {
        this.setOptions2(this.chartData)
      } else {
        this.setOptions(this.chartData)
      }
    },
    getYearAndMonthAndDay() {
      var start = new Date()
      var end = new Date()
      var nowMilliSeconds = end.getTime()
      start.setTime(nowMilliSeconds - (7 * 86400000))
      end.setTime(nowMilliSeconds - (1 * 86400000))
      var date_all = []
      var i = 0
      var startTime = start
      var endTime = end
      while ((endTime.getTime() - startTime.getTime()) >= 0) {
        var year = startTime.getFullYear()
        var month = (startTime.getMonth() + 1).toString().length === 1 ? '0' + (startTime.getMonth() + 1).toString() : (startTime.getMonth() + 1).toString()
        var day = startTime.getDate().toString().length === 1 ? '0' + startTime.getDate() : startTime.getDate()
        date_all[i] = year + '-' + month + '-' + day
        startTime.setDate(startTime.getDate() + 1)
        i += 1
      }
      return date_all
    }
  }
}
</script>
